Individual Event Report
| Event #331 - Summary, and parameter estimates with source IDs |
| The Oregonian is the basis of information for this earthquake. It states: " St. Helens, OR., April 27--Two very marked and distinct earthquake shocks were felt here at 2:30 this morning. Doors and windows rattled as if in a severe wind storm, yet there was hardly a breath of air stirring at the time. The shocks were about half a minute apart." Berg and Baker, Woodward Clyde, and the WPPSS catalog give an incorrect month (9) for this event; probably due to a typographical error. |
| TIME |
LOCATION |
MAGNITUDE |
MAX. INTENSITY |
FELT AREA |
| YR |
MO |
DAY |
HR |
MIN |
AM/PM |
Time
Type |
LAT(N) |
LON(W) |
DEP
(km) |
MAG |
Mag
Type |
Felt
Plc. |
Felt
St. |
Inten-
sity |
Int.
Type |
Felt
Area |
Felt
Area
Int. |
Felt
Area
Units |
| 1900 |
4 |
28 |
2 |
30 |
A |
|
45.91 |
122.80 |
|
|
|
St. Helens |
OR |
|
|
|
|
|
| N-Ore - 1951 |
WWC - 1739 |
- |
- |
N-Ore - 1951 |
- |
Underlying Source Material
| Source ID |
Publication |
Pub Date |
Pub Details |
| 2067 |
Leslie M. Scott, Memoranda of the Files of the Oregonian 1850-1910, Oregon Historical Society |
1910 |
Unpublished index to the Oregonian |
| Transcription: at St. Helens, Oregon, Apr. 28, 1900 |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 1319 |
Berg and Baker, 1963, Oregon Earthquakes, 1841 through 1958, BSSA, V. 53, No. 1, pp. 95-108 |
1963 |
|
| Transcription: 1900 - - Sept 28 - St. Helens - 7 |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 1739 |
Woodward Clyde Consultants, unpublished |
1981 |
Woodward-Clyde Consultants (1981), Historical Catalog (1841-1980) for the Pacific Northwest Region, unpublished catalog prepared for the Washington Public Power Supply System. Copy provided to UW in 1993. |
| Transcription: 19000928 45912-122807W BB 01 |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 2443 |
Washington Public Power Supply System, "WPPSS Nuclear Project No. 2, Final Safety Analysis Report, Volume 1, Amendment 18"
September 1981 |
1981 |
Table 2.5-6 |
| Transcription: 1900 Sep 28 St. Helens, Ore. B & B |
| |
| Source ID |
Publication |
Pub Date |
Pub Details |
| 1951 |
Oregonian |
1900 |
April 28, 1900; pg 4, col 4 |
Transcription: St. Helens Shaken
Distinct Earthquake Shock Felt There This Morning
St. Helens, OR., April 27--Two very marked and distinct earthquake shocks were felt here at 2:30 this morning. Doors and windows rattled as if in a severe wind storm, yet there was hardly a breath of air stirring at the time. The shocks were about half a minute apart. |
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